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An HPLC method for measuring total hydroxyproline in human urine was validated. Hydroxyproline derivatization was achieved with 9-fluorenylmethyl chloroformate after blocking primary amino acids with orthophthaldialdehyde. The derivatives (hydroxyproline and internal standard) were separated by reversed phase high-performance liquid chromatography and detected by absorbance at 254 nm. Duplicate...
Serum 1,5-anhydro-d-glucitol (AG) has been proposed as a marker of glycaemic control in diabetic patients. Two methods have been developed which could be applied to routine clinical monitoring of serum AG. We have compared the assay characteristics of an adapted enzyme assay, based on the enzyme pyranose oxidase, with a high-performance anion-exchange chromatographic method using pulsed amperometric...
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